Battery pack



FIG. 1 is a front perspective view;

FIG. 2 is a front plan view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a bottom plan view therof;

FIG. 5 is a right side view thereof;

FIG. 6 is a back plan view thereof; and,

FIG. 7 is a top plan view thereof. 

We claim the ornamental design for a battery pack, as shown. 